Method, device and system for presenting virtual conference site of video conference

ABSTRACT

A method for presenting a virtual conference site of a video conference is disclosed in the present invention. The method include: receiving preset virtual conference site attributes and determining one virtual conference site attribute therefrom, where the virtual conference site includes at least two conference terminals; determining a virtual conference site control mode; acquiring, according to the determined virtual conference site attribute and the virtual conference site control mode, one virtual conference site presentation mode in preset virtual conference site presentation modes, and presenting a virtual conference site in the acquired virtual conference site presentation mode. A virtual conference site preset apparatus, a media processing device, a video conference terminal and a video conference system are also disclosed in the present invention. By utilizing the present invention, a conference control mode may be simplified, and the experience of video conference participators may be improved.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of International Application No.PCT/CN2010/075022, filed on Jul. 7, 2010, which claims priority toChinese Patent Application No. 200910161931.9, filed on Sep. 1, 2009,both of which are hereby incorporated by reference in their entireties.

FIELD OF THE INVENTION

The present invention relates to the fields of communications andcomputer technologies, and in particular, to a method, device and systemfor presenting a virtual conference site of a video conference.

BACKGROUND OF THE INVENTION

A common conference system, that is, a conventional video conferencesystem, is a system providing audio and video communications on thebasis of H.323, H.320, and SIP (Session Initial Protocol) standardprotocols. The common conference site typically uses 1 path of videoinput and 1 path of video output.

A telepresence conference system, that is, a new remote presentationsystem differs from the common conference system, is a video conferencesystem of high experience. The telepresence conference site performsmulti-screen output through multiple paths of camera, so as to providemore realistic video communication effect.

Virtual conference sites may be classified into different types ofconference sites on the basis of geography or according to functions ofconference participators, and a set of common conference sites andtelepresence conference sites of the same type is referred to as avirtual conference site. For example, in a multi-point video conference,if classification is made according to geography, three sub-conferencesites of development, customer service, and marketing in Shanghai may bevirtualized into a Shanghai virtual conference site.

A multi-picture technology refers to that a video conference systemsupports combining multiple paths of pictures entering the conferencewith different or the same protocol and rate into the same one (orseveral) picture, encodes the picture again by using a rate and protocolrequired by the conference, and sends the picture to any one or severalterminals participating the conference.

During the implementation of the present invention, the inventor findsthat the prior art has the following defects:

In a hybrid conference including the common conference site and thetelepresence conference site, multi-path broadcast transmission forpictures of a certain type of virtual conference site (includingmultiple sub-conference sites) currently adopts a conference controlmode of switching virtual conference sites one by one. This conferencecontrol mode not only has a complicated operation, but also has aproblem that the multiple virtual conference sites are broadcastedsequentially and cannot be well presented, so it is impossible toprovide a good experience for participators of the video conference.

SUMMARY OF THE INVENTION

An embodiment of the present invention provides a method for presentinga virtual conference site of a video conference, for simplifying aconference control mode, and improving the presentation of a videoconference and the experience of participators. The method includes:

receiving preset virtual conference site attributes, and determining onevirtual conference site attribute therefrom, where the virtualconference site includes at least two conference terminals;

determining a virtual conference site control mode; and

according to the determined virtual conference site attribute and thevirtual conference site control mode, acquiring one virtual conferencesite presentation mode in preset virtual conference site presentationmodes, and presenting a virtual conference site in the acquired virtualconference site presentation mode.

An embodiment of the present invention further provides a method forpresenting a virtual conference site of a video conference, forsimplifying a conference control mode, and improving the presentation ofa video conference and the experience of participators. The methodincludes:

acquiring virtual conference site attributes preset by a virtualconference site preset apparatus, where the virtual conference siteincludes at least two conference terminals;

according to the preset virtual conference site attributes, and undervarious preset virtual conference site control modes, presetting virtualconference site presentation modes; and

sending to a video conference terminal the preset virtual conferencesite attributes and one virtual conference site presentation moderequested by the video conference terminal for acquisition in the presetvirtual conference site presentation modes.

An embodiment of the present invention further provides a virtualconference site preset apparatus, for simplifying a conference controlmode, and improving the experience of participators of a videoconference. The apparatus includes:

a first presetting module, configured to preset virtual conference siteattributes, where the virtual conference site includes at least twoconference terminals;

a second presetting module, configured to, according to the presetvirtual conference site attributes, and under various preset virtualconference site control modes, preset virtual conference sitepresentation modes; and

a sending module, configured to send the preset virtual conference siteattributes and one virtual conference site presentation mode requestedby a video conference terminal for acquisition in the preset virtualconference site presentation modes.

An embodiment of the present invention further provides a mediaprocessing device, for simplifying a conference control mode, andimproving the experience of participators of a video conference. Themedia processing device includes:

an acquiring module, configured to acquire virtual conference siteattributes preset by a virtual conference site preset apparatus, wherethe virtual conference site includes at least two conference terminals;

a presetting module, configured to, according to the preset virtualconference site attributes, and under various preset virtual conferencesite control modes, preset virtual conference site presentation modes;and

a sending module, configured to send to a video conference terminal thepreset virtual conference site attributes and one virtual conferencesite presentation mode requested by the video conference terminal foracquisition in the preset virtual conference site presentation modes.

An embodiment of the present invention further provides a videoconference terminal, for simplifying a conference control mode, andimproving the experience of participators of a video conference. Thevideo conference terminal includes:

a first determining module, configured to receive preset virtualconference site attributes, and determine one virtual conference siteattribute therefrom, where the virtual conference site includes at leasttwo conference terminals;

a second determining module, configured to determine a virtualconference site control mode; and

a presenting module, configured to, according to the determined virtualconference site attribute and the virtual conference site control mode,acquire one virtual conference site presentation mode in preset virtualconference site presentation modes, and present a virtual conferencesite in the acquired virtual conference site presentation mode.

An embodiment of the present invention further provides a videoconference system, for simplifying a conference control mode, andimproving the experience of participators of a video conference. Thesystem includes:

a virtual conference site preset apparatus, configured to: presetvirtual conference site attributes, where the virtual conference siteincludes at least two conference terminals; according to the presetvirtual conference site attributes, and under various preset virtualconference site control modes, preset virtual conference sitepresentation modes; send the preset virtual conference site attributes;receive a request of a video conference terminal acquiring one virtualconference site presentation mode in the preset virtual conference sitepresentation modes forwarded by a media processing device, and send onevirtual conference site presentation mode in the preset virtualconference site presentation modes requested by the video conferenceterminal;

the media processing device, configured to: receive and forward to thevideo conference terminal the preset virtual conference site attributessent by the virtual conference site preset apparatus; receive a requestof acquiring one virtual conference site presentation mode in the presetvirtual conference site presentation modes sent by the video conferenceterminal and forward it to the virtual conference site preset apparatus;and forward the virtual conference site presentation mode sent by thevirtual conference site preset apparatus; and

the video conference terminal, configured to: receive the preset virtualconference site attributes and determine one virtual conference siteattribute therefrom; determine a virtual conference site control mode;according to the determined virtual conference site attribute and thevirtual conference site control mode, send the request of acquiring onevirtual conference site presentation mode in the preset virtualconference site presentation modes; receive the virtual conference sitepresentation mode forwarded by the media processing device, and presenta virtual conference site in the received virtual conference sitepresentation mode.

An embodiment of the present invention further provides a videoconference system, for simplifying a conference control mode, andimproving the experience of participators of a video conference. Thesystem includes:

a virtual conference site preset apparatus, configured to preset virtualconference site attributes, where the virtual conference site includesat least two conference terminals; and send the preset virtualconference site attributes;

a media processing device, configured to: receive the preset virtualconference site attributes and forward them to a video conferenceterminal; according to the preset virtual conference site attributes,and under various preset virtual conference site control modes, presetvirtual conference site presentation modes; receive a request of a videoconference terminal acquiring one virtual conference site presentationmode in the preset virtual conference site presentation modes, and sendone virtual conference site presentation mode in the preset virtualconference site presentation modes requested by the video conferenceterminal; and

the video conference terminal, configured to: receive the preset virtualconference site attributes and determine one virtual conference siteattribute therefrom; determine a virtual conference site control mode;according to the determined virtual conference site attribute and thevirtual conference site control mode, send the request of acquiring onevirtual conference site presentation mode in the preset virtualconference site presentation modes; receive the virtual conference sitepresentation mode sent by the media processing device, and present avirtual conference site in the received virtual conference sitepresentation mode.

In the embodiments of the present invention, for the virtual conferencesite including at least two conference terminals, receive preset virtualconference site attributes and determine one virtual conference siteattribute therefrom, where the virtual conference site includes at leasttwo conference terminals; determine a virtual conference site controlmode; according to the determined virtual conference site attribute andthe virtual conference site control mode, acquire one virtual conferencesite presentation mode in the preset virtual conference sitepresentation modes, and present a virtual conference site in theacquired virtual conference site presentation mode; thereby using thevirtual conference site attribute to provide a conference control modein which pictures of the virtual conference site are switchedintegrally. The operation is simple and convenient, so that the virtualconference site may be well presented, thereby providing a goodexperience for participators of the video conference.

BRIEF DESCRIPTION OF THE DRAWINGS

To illustrate the technical solutions in the embodiments of the presentinvention or in the prior art more clearly, the accompanying drawingsfor describing the embodiments or the prior art are introduced brieflyin the following. Apparently, the accompanying drawings in the followingdescription are only some embodiments of the present invention, andpersons of ordinary skill in the art may further derive other drawingsaccording to these accompanying drawings without creative efforts. Inthe drawings:

FIG. 1 is a flow chart of a control method for a virtual conference siteof a video conference in an embodiment of the present invention;

FIG. 2 is a schematic diagram of networking which converges amulti-point telepresence conference and a conventional video conferencein an embodiment of the present invention;

FIG. 3 is a schematic diagram of a conference control member at atelepresence conference site side in an embodiment of the presentinvention;

FIG. 4 is a schematic diagram of a conference control operationinterface at a conference site side in an embodiment of the presentinvention;

FIG. 5 is a schematic diagram of delivering process of a conference sitelist in an embodiment of the present invention;

FIG. 6 is a schematic diagram of an operation management stationpresetting a virtual conference site in an embodiment of the presentinvention;

FIG. 7 is a schematic diagram of a polling presentation mode of avirtual conference site under a telepresence conference site in anembodiment of the present invention;

FIG. 8 is a schematic diagram of a multi-picture presentation mode of avirtual conference site under a telepresence conference site in anembodiment of the present invention;

FIG. 9 is a schematic diagram of a multi-picture mode of a virtualconference site under a telepresence conference site in an embodiment ofthe present invention;

FIG. 10 is a schematic diagram of a multi-picture presentation mode of avirtual conference site under a common conference site in an embodimentof the present invention;

FIG. 11 is a schematic diagram of a multi-picture mode of a virtualconference site under a common conference site in an embodiment of thepresent invention;

FIG. 12 is a schematic diagram of a grouping template in an embodimentof the present invention;

FIG. 13 is a schematic structure diagram of a virtual conference sitepreset apparatus in an embodiment of the present invention;

FIG. 14 is a schematic structure diagram of a media processing device inan embodiment of the present invention;

FIG. 15 is a schematic structure diagram of a video conference terminalin an embodiment of the present invention; and

FIG. 16 and FIG. 17 are schematic structure diagrams of a videoconference system in an embodiment of the present invention.

DETAILED DESCRIPTION OF THE EMBODIMENTS

In order to make objectives, technical solutions and advantages ofembodiments of the present invention clearer, the embodiments of thepresent invention are further illustrated in detail below with referenceto the accompanying drawings. Here, the exemplary embodiments of thepresent invention and illustration thereof are used to explain thepresent invention, but are not intended to limit the present invention.

The virtual conference site of the video conference involved in theembodiments of the present invention needs to include at least twoconference terminals. As shown in FIG. 1, in an embodiment of thepresent invention, a flow of a control method for a virtual conferencesite of a video conference is as follows:

Step 101: Receive preset virtual conference site attributes anddetermine one virtual conference site attribute therefrom, where thevirtual conference site includes at least two conference terminals.

Step 102: Determine a virtual conference site control mode.

Step 103: According to the determined virtual conference site attributeand the virtual conference site control mode, acquire one virtualconference site presentation mode in the preset virtual conference sitepresentation modes, and present a virtual conference site in theacquired virtual conference site presentation mode.

It can be seen from the flow shown in FIG. 1 that, in the embodiment ofthe present invention, for the virtual conference site including atleast two conference terminals, through performing the foregoing controlmethod, a conference control mode in which pictures of the virtualconference site are switched integrally is provided by using the virtualconference site attribute, thereby simplifying the processing mode ofthe virtual conference site, and therefore, virtual conference site IDsincluded in the virtual conference site attribute may be displayedcorrectly at both the telepresence conference site side and the commonterminal conference site side. Therefore, unified operation andmanagement may be performed for the virtual conference site, andoperations including selecting a conference site and broadcasting aconference site may be well simplified, thereby reducing the operationand maintenance of users, so that the virtual conference site may bewell presented, giving a good experience for participators of the videoconference.

Specific embodiments of the control method for the virtual conferencesite of the video conference shown in the flow of FIG. 1 are introducedin detail below. A network structure of a video conference involved inthis embodiment is illustrated by taking one application scenario shownin FIG. 2, FIG. 3, and FIG. 4 as an example, and the flow shown in FIG.1 is also applicable to other similar network structures of the videoconference.

As shown in FIG. 2, in a network where a multi-point telepresenceconference is converged with a conventional video conference, amultipoint control unit (MCU), an operation management station, aregistrar server, a transmission network, a telepresence conferencesite, and a common conference site are included. The registrar server isoptional. The multi-point control unit is an embodiment of the mediaprocessing device, and the media processing device involved in theembodiment of the present invention may be a multi-point control unit,and may also be another media processing device, such as a mediaresource server (MRS). In the embodiment of the present invention, themulti-point control unit is taken as an example for illustration.

Main conference control members at the telepresence conference siteinclude: a central control system, a central control system touchscreen, and a terminal, where the central control system may also bereferred to as a central controller. As shown in FIG. 3, uniformmanagement may be performed for the terminal of each conference sitethrough the touch screen of the central control system at the conferencesite side, and the multi-point conference control may be operated on thetouch screen of the central control system and may also be operateddirectly on a certain terminal. The central control system communicateswith the terminal through a serial port and in an IP mode.

FIG. 4 is a schematic diagram of a conference control operationinterface at the conference site. In a multi-point conference, for thevirtual conference site, conference control operations at the conferencesite side mainly includes: displaying a conference site list, updating aconference site list, broadcasting a conference site, giving floor to aconference site, selecting a conference site, free discussion, adding aconference site, ending a conference, requesting/releasing chair, mute,mute a microphone, calling a conference site, hanging up a conferencesite, screen image switching, and the like.

In an embodiment, when the method for presenting a virtual conferencesite of a video conference shown in FIG. 1 is specifically implemented,a virtual conference site preset apparatus is required to preset virtualconference site attributes; and the preset virtual conference siteattributes are forwarded to a video conference terminal through a mediaprocessing device. The virtual conference site preset apparatus may bean operation management station, and may also be a central controlsystem.

For example, on the operation management station, covering cascadingsituation of conference terminals, the preset virtual conference siteattributes include an identity (ID) of a virtual conference site, anidentity of a bound terminal in the virtual conference site, and thelike. The identity of the terminal in the virtual conference site may bean MT (MCU Terminal, MCU terminal) number of the terminal or an alias ofthe terminal in the virtual conference site, and here, the alias may bein a form of number, email, or ID. Then, summon a conference to deliverattributes of a virtual conference site to an MCU, and definitely,during application, the MCU may also acquire the virtual conference siteattributes actively. For example, the MCU may send a request to theoperation management station, requesting for acquiring virtualconference site attributes. For the telepresence conference site, whenthe MT number is delivered, special processes may be performed, that is,deliver an MT number of a main terminal of the conference site, andafter the delivery, the MCU delivers the virtual conference siteattributes, which including a binding relationship of the virtualconference sites at the same time, for example, a virtual conferencesite 1 (ID) M1 T1, M2 T2, M1 T3, a virtual conference site 2 (ID) M1 T4,M1 T5, M3 T5. That is, the virtual conference site 1 correspondinglyincludes a conference site 1 under an MCU1, a conference site 2 under anMCU2, and a conference site 3 under the MCU1. The virtual conferencesite 2 correspondingly includes a conference site 4 under the MCU1, aconference site 5 under the MCU1, and a conference site 5 under an MCU3.

For another example, virtual conference site attributes may also bepreset on an operation interface of the central control system at theconference site side, and then the information is sent to the networkside of the conference system through a site call signaling, such as GK(Gatekeeper, gatekeeper), and is forwarded to the MCU, and finally theMCU summons a conference that includes multi-point virtual conferencesites. Definitely, a virtual conference site preset apparatus may alsobe used to preset the virtual conference site attributes, and theforgoing operation management station and the central control system arespecific examples of the apparatus.

After the conference is summoned up, for a virtual conference site, theMCU delivers the virtual conference site attributes for each videoconference terminal, where the MCU may make a judgment according towhether the current conference site is a virtual conference site, anddeliver the virtual conference site attributes according to thesituation. The delivery process of the virtual conference siteattributes is shown in FIG. 5, which may include the following:

Step 501: Summon a multi-point conference.

Step 502: Judge whether the currently delivered conference site is avirtual conference site, and: if the currently delivered conference siteis a virtual conference site, perform step 503; if the currentlydelivered conference site is a virtual conference site, perform step505. The judging whether the currently delivered conference site is avirtual conference site may have various manners, which may specificallybe: presetting some conference sites for the virtual conference sites,recording ID numbers of these conference sites in advance, subsequentlychecking whether the currently delivered ID numbers of the conferencesites are recorded in advance, so as to judge whether the currentlydelivered conference site is a virtual conference site. That is, if theID number of the currently delivered conference site is recorded inadvance, it may be judged that the currently delivered conference siteis a virtual conference site; and if the ID number of the currentlydelivered conference site is not recorded in advance, it may be judgedthat the currently delivered conference site is not a virtual conferencesite.

Step 503: Deliver the virtual conference site attributes of the virtualconference site.

Step 504: After the video conference terminal of each conference sitereceives the virtual conference site attributes, if the received virtualconference site attributes include the ID number of the virtualconference site, the ID number of the received virtual conference siteis displayed correctly; and if the received virtual conference siteattribute only includes the identity of the terminal in the virtualconference site, such as an MT number, the received MT number of theterminal is displayed correctly.

Step 505: Process normally according to an actual conference site (thatis, a common conference site).

A communication channel for delivering the virtual conference siteattributes between the video conference terminal and the MCU may beexpanded on the existing conference communication channel (for example,H.245 conference control channel), and may also be a newly addednon-standard channel, in which this processing manner may also beexpanded to conference systems based on H.323, H.320, and SIP standardprotocols.

After the video conference terminal receives the preset virtualconference site attributes, it is required to determine one virtualconference site attribute therefrom according to input of a user, so asto perform presentation of the virtual conference site subsequently. Forthe user, the conference control operation is performed according to thevirtual conference site attributes, so the control operations of thevirtual conference site are performed all directing to the whole of thevirtual conference site, instead of directing to a certain videoconference terminal of the virtual conference site.

During the implementation, for performing the presentation of thevirtual conference site, the video conference terminal further needs todetermine the virtual conference site control mode. The control mode ofthe virtual conference site controls the virtual conference site as awhole, which may specifically be broadcasting a conference site, mayalso be selecting a conference site, may further be de-broadcasting aconference site, or conference site mute/de-mute, conference sitemicrophone mute/de-mute, giving floor to a conference site, freediscussion, adding/deleting a conference site, calling/hanging up aconference site, ending a conference, requesting/releasing a chair, andthe like. During the implementation, the video conference terminal maydetermine the virtual conference site control mode according to theinput of the user.

After the video conference terminal determines the virtual conferencesite attribute and the virtual conference site control mode, it isrequired to, according to the determined virtual conference siteattribute and the virtual conference site control mode, acquire onevirtual conference site presentation mode in the preset virtualconference site presentation modes, and present a virtual conferencesite in the acquired virtual conference site presentation mode.

Under various control modes of the virtual conference site, theoperation management station, the central control system, and the mediaprocessing device may all preset the virtual conference sitepresentation modes according to the virtual conference site attributes.During the implantation, the virtual conference site presentation modespreset by the three may be enabled at the same time, or one of them isenabled. The operation management station and the central control systemare all specific examples of the foregoing virtual conference sitepreset apparatus. During implementation, various virtual conference sitecontrol modes are preset in the virtual conference site preset apparatusand/or media processing device. For different virtual conference siteattributes and virtual conference site control modes, the virtualconference site preset apparatus and/or media processing device maypreset corresponding virtual conference site presentation modes.

In the embodiment of the present invention, the operation managementstation presetting the virtual conference site presentation modes istaken as an example for illustration, and the situation of the centralcontrol system or the media processing device presetting the virtualconference site presentation modes is similar thereto. During theimplementation, in addition to presetting the virtual conference sitepresentation modes, the operation management station and the centralcontrol system may further provide, according to the virtual conferencesite attributes, a setting and a control interface that are capable ofinstalling the virtual conference site presentation modes, and deliverto the media processing device after finishing the setting.

During the implementation, the operation management station presettingthe presentation mode for the virtual conference site may be classifiedinto a virtual conference site presentation mode under a telepresenceconference site and a virtual conference site presentation mode under acommon conference site. The virtual conference site presentation modeunder the telepresence conference site is more applicable to themulti-screen scenario of the telepresence conference site, so as to wellpresent the virtual conference site. The virtual conference sitepresentation mode under the common conference site is mainly applicableto the scenario of presenting a virtual conference site of the commonconference site, without considering the actual situation of multiplescreens of the telepresence conference site.

By taking the operation management station presetting the virtualconference site attributes and the virtual conference site presentationmodes as an example, the virtual conference site attributes and thevirtual conference site presentation modes are preset at the operationmanagement station in advance, and the specific presetting is shown inFIG. 6, which may include the following:

Step 601: Preset a virtual conference site.

Step 602: The operation management station presets the virtualconference site attributes.

Step 603: Preset specific processing manners of presentation modes ofvarious pictures under the telepresence conference site and under thecommon conference site, including polling, multi-picture polling, andmulti-picture mode that will be mentioned later.

Step 604: When all terminals preset selecting a conference site, theyperform presetting by selecting one of the virtual conference sitepresentation mode under the telepresence conference site and the virtualconference site presentation mode under the common conference site.

Step 605: When all terminals preset selecting a conference site, theyperform the presetting by selecting one of polling, multi-picturepolling, and multi-picture mode of the virtual conference sitepresentation mode under the preset telepresence conference site or ofthe virtual conference site presentation mode under the commonconference site.

Step 606: When all terminals preset a broadcast conference site, theyperform presetting by selecting one of the virtual conference sitepresentation mode under the telepresence conference site and the virtualconference site presentation mode under the common conference site.

Step 607: When all terminals preset a broadcast conference site, theyperform the presetting by selecting one of polling, multi-picturepolling, and multi-picture manner of the virtual conference sitepresentation mode under the preset telepresence conference site or ofthe virtual conference site presentation mode under the commonconference site.

Step 608: The MCU judges whether the current conference site broadcastsa conference site or selects a conference site. If selecting aconference site, perform step 609; and if broadcasting a conferencesite, perform step 610.

Step 609: Perform processing according to the preset selectingpresentation mode.

Step 610: Perform processing according to the preset broadcastingpresentation mode.

Various presentation modes of the virtual conference site in FIG. 6 areillustrated in detail as follows:

(1) The Virtual Conference Site Presentation Mode Under the TelepresenceConference Site

A telepresence conference site having 3 conference terminals and 3display screens is taken as an example for illustration, which may beexpanded to have N screens. Illustration is made by taking 5 virtualconference sites as an example, which may be expanded to M virtualconference sites. The following three presentation modes may be presetat the operation management station. The M and the N are independentfrom each other, and no limitation exists between magnitudes thereof.

Mode 1: Polling mode

This mode is characterized by considering the multi-screen feature ofthe telepresence conference site, and is classified into three kinds ofpolling modes.

First kind: in the telepresence conference site, at least one screendisplays a fixed virtual conference site, and other screens displayother virtual conference sites by adopting the polling mode. In thetelepresence conference site shown in FIG. 7, first 2 screens displaythe fixed virtual conference site, and the last screen displays othervirtual conference sites by adopting the polling mode.

Second kind: in the telepresence conference site, the total number ofscreens is taken as a unit, and virtual conference sites of the totalnumber are displayed each time, until all the virtual conference sitesare displayed. In the telepresence conference site shown in FIG. 7, 3screens are taken as a unit; 3 virtual conference sites are displayed ateach time; the subsequent 3 virtual conference sites are then displayedat the next time; and the rest may be deduced through analog, until allare displayed.

Third kind: split joint all virtual conference sites into a whole image,and display the whole image on all screens of the telepresenceconference site through image compression or stretching. In the virtualconference site shown in FIG. 7, pictures of M conference sites areformed into a whole image of the M conference sites through an imagesplit jointing function of the MCU, and the image is full-screendisplayed on N screens of the telepresence conference site throughcompressing and stretching of the image.

In the foregoing three modes, for the common conference sites, thevirtual conference sites are displayed one by one in a sequentialpolling mode.

Mode 2: Multi-picture polling mode

This mode is characterized by considering the multi-screen feature ofthe telepresence conference site. In the telepresence conference site,at least one screen display a fixed virtual conference site, and otherscreens uniformly display other virtual conference sites by adopting themulti-picture polling mode. For example, as shown in FIG. 8, first 2screens display fixed virtual conference sites, and the last screenuniformly display other virtual conference sites by adopting themulti-picture polling mode.

In this situation, considering the encoding/decoding processingcapability of the MCU, in order to reduce the amount ofencoding/decoding processing of the MCU as low as possible, the commonconference site may display sequentially the virtual conference site ofeach screen in the telepresence conference site in the multi-picturepolling mode. For example, as shown in FIG. 8, when the MCU processes(F, E), (G, E) encoding/decoding, the polling mode of the commonconference site is that the C, D, (F, E), (G, E) are displayedsequentially in the multi-picture polling mode of the conventional videoconference.

Mode 3: Multi-picture mode

This mode is characterized by considering the multi-screen feature ofthe telepresence conference site. In the telepresence conference site,at least one screen display a fixed virtual conference site, and otherscreens uniformly display other virtual conference sites by adopting themulti-picture mode. As shown in FIG. 9, first 2 screens display fixedvirtual conference sites, and the last screen displays other virtualconference site by adopting a multi-picture mode. In this situation,considering the encoding/decoding processing capability of the MCU, inorder to reduce the amount of encoding/decoding processing of the MCU aslow as possible, the common conference site may display sequentially thevirtual conference site of each screen in the telepresence conferencesite in the multi-picture mode. For example, as shown in FIG. 9, whenthe MCU processes (E, F, G) encoding/decoding, the multi-picture mode ofthe common conference site is that the C, D, (E, F, G) are displayedsequentially in the multi-picture mode of the conventional videoconference.

Another multi-picture mode: in the telepresence conference site, thetotal number of screens is taken as a unit, and multiple virtualconference sites are displayed averagely. As shown in FIG. 9, 3 screensare taken as a unit, and multiple virtual conference sites are displayedaveragely. In this situation, considering the encoding/decodingprocessing capability of the MCU, in order to reduce the amount ofencoding/decoding processing of the MCU as low as possible, the commonconference site may display sequentially the virtual conference site ofeach screen in the telepresence conference site in the multi-picturemode. For example, as shown in FIG. 9, when the MCU processes (C, D),(E, F) encoding/decoding, the multi-picture mode of the commonconference site is that the (C, D), (E, F), G are displayed sequentiallyin the multi-picture mode of the conventional video conference.

During the implementation, the control of the virtual conference sitemainly includes: broadcasting a conference site, selecting a conferencesite, screen image switching, and the like. For the user, the forgoingoperations are performed all directing to the whole of the virtualconference site, instead of directing to a certain terminal of thevirtual conference site.

As described in the foregoing, when providing selecting or broadcastingpresentation of a certain virtual conference site, a telepresencesub-conference site may present the scenario of the virtual conferencesite intelligently according to screen resource situation of thetelepresence conference site, and the user may view bigger or more videoimages of the virtual conference site with more screens, therebyenhancing the video experience and communication effect of the users,and improving the use value of the system.

(2) The Virtual Conference Site Presentation Mode Under the CommonConference Site

This presentation mode mainly considers the scenario of presenting thevirtual conference site in the common conference site, withoutconsidering the actual situation of multiple screens of the telepresenceconference site. Specifically, this mode may also be classified intothree presentation modes:

Mode 1: Polling mode

This mode is the same as the virtual conference site presentation modeunder the telepresence conference site as described in the foregoing.

Mode 2: Multi-picture polling mode

The common conference site displays all virtual conference sites in themulti-picture polling mode. In the telepresence conference site, onescreen displays a virtual conference site the same as the commonconference site, and other screens display the virtual conference siterandomly. As shown in FIG. 10, the multi-picture polling mode of thecommon conference site is the multi-picture polling mode of theconventional video conference, in which C, D, E, and (F, G) aredisplayed through multiple pictures, where sub-pictures of F and Gconference sites are displayed in the pooling mode.

The multi-picture polling mode of the telepresence conference site isthat, a certain screen (for example, the last screen TV3) may bedesignated to display the scenario the same as that of the commonconference site TV, and other two screens may randomly select C, D, E,F, and G conference sites for viewing.

Mode 3: Multi-picture mode

The common conference site displays all virtual conference sites in themulti-picture mode. In the telepresence conference site, one screendisplays a virtual conference site the same as the common conferencesite, and other screens display the virtual conference site randomly. Asshown in FIG. 11, the multi-picture mode of the common conference siteis the multi-picture mode of the conventional video conference, in whichC, D, E, F, and G are displayed in multiple pictures.

The multi-picture polling mode of the telepresence conference site isthat, a certain screen (for example, the last screen TV3) may bedesignated to display the scenario the same as that of the commonconference site TV, and other two screens may randomly select C, D, E,F, and G conference sites for viewing.

As described in the foregoing, in the virtual conference site displaymode under the common conference site, the telepresence conference sitemay also propose the interested conference site thereof, and have thefreedom to use one screen to select to view a certain conference site ofthe virtual conference site.

If the virtual conference site preset apparatus presets the virtualconference site presentation modes, the video conference terminal,according to the determined virtual conference site attribute and thevirtual conference site control mode thereof, acquires, from the virtualconference site preset apparatus, one virtual conference sitepresentation mode in the preset virtual conference site presentationmodes through the media processing device, and presents a virtualconference site in the acquired virtual conference site presentationmode.

If the media processing device presets the virtual conference sitepresentation modes, after obtaining the preset virtual conference siteattributes delivered by the virtual conference site preset apparatus,the media processing device, according to the preset virtual conferencesite attributes, and under various preset virtual conference sitecontrol modes, presets virtual conference site presentation modes; andthe video conference terminal, according to the determined virtualconference site attribute and the virtual conference site control modethereof, acquires, from the media processing device, one virtualconference site presentation mode in the preset virtual conference sitepresentation modes, and presents a virtual conference site in theacquired virtual conference site presentation mode.

By taking that the virtual conference site control mode determined bythe video conference terminal is broadcasting a conference site as anexample, a video conference terminal having the chair right maydetermine the required virtual conference site presentation modeaccording to the determined virtual conference site attribute and thevirtual conference site control mode thereof, and then acquire thevirtual conference site presentation mode from the operation managementstation through the MCU. Specifically, the video conference terminalhaving the chair right initiates a broadcast request to the MCU; the MCUforwards the broadcast request to the operation management station; theoperation management station selects one virtual conference sitepresentation mode requested by the video conference terminal from thepreset virtual conference site presentation modes and delivers it to theMCU; the MCU receives the virtual conference site presentation modedelivered by the operation management station and then forwards it tothe video conference terminal; then the video conference terminalnotifies the video conference terminal of each conference site ofpresenting the scenario of the virtual conference site in the receivedvirtual conference site presentation mode.

By taking that the virtual conference site control mode determined bythe video conference terminal is selecting a conference site as anexample, the video conference terminal of each conference site initiatesa selecting request to the MCU; the MCU selects one virtual conferencesite presentation mode requested by the video conference terminal fromthe preset virtual conference site presentation modes and delivers it tothe video conference terminal; and the video conference terminalpresents a virtual conference site in the received virtual conferencesite presentation mode, thereby implementing presenting the scenario ofthe virtual conference site at the conference site initiating therequest. Definitely, in addition to the broadcasting a conference siteand the selecting a conference site, the video conference terminal mayalso determine other virtual conference site control modes, and thenetwork side may know the determined virtual conference site controlmode thereof in a manner of sending a request.

In another embodiment, the media processing device, such as themulti-point control unit, is mainly responsible for implementing themethod for presenting a virtual conference site of a video conference.This embodiment is characterized in that, the conference controloperation directing to a certain conference site of the virtualconference site initiated by any common terminal is considered as theoperation for the whole virtual conference site, and therefore existingconference terminal devices may be compatible, that is, the mediaprocessing device instructs the video conference terminal to, accordingto the determined virtual conference site attribute and the virtualconference site control mode, present all virtual conference sites in agroup to which the virtual conference site requested for presentationbelongs in the acquired virtual conference site presentation mode, andthe specific implementation thereof includes the following:

The virtual conference site attributes preset on the operationmanagement station include an ID of the virtual conference site, an MTnumber of a bound terminal in the virtual conference site, a number of abound terminal in the virtual conference site, and the like. Forexample, the virtual conference site attribute is such defined toinclude a binding relationship of the conference sites at the same time,for example, a virtual conference site 1 (ID) M1 T1, M2 T2, M1 T3, and avirtual conference site 2 (ID) M1 T4, M1 T5, M3 T5. Then, summon aconference, and after the operation management station delivers thevirtual conference site attributes to the MCU together, summon aconference including a multi-point virtual conference site.

On the operation management station, two modes: a real conference sitecontrol mode (that is, the common conference site control mode) and avirtual conference site control mode are defined, and the two modes maybe switched to each other in the conference. The real conference sitecontrol mode is the same as the conventional video conference controlmode, but under the virtual conference site control mode, the conferencecontrol operation directing to a certain conference site of the virtualconference site initiated by any common terminal is considered as theoperation for the whole virtual conference site. For example, a virtualconference site 1 includes a conference site M1 T1, a conference site M2T2, and a conference site M1 T3. When conference control operation forone of the conference sites such as the M1 T1 is performed, theconference control operation affects the virtual conference site 1.Other virtual conference site control modes including broadcasting aconference site and selecting a conference site, and the virtualconference site presentation modes including the virtual conference sitepresentation mode under the common conference site and under thetelepresence conference site, are all the same as those in the foregoingembodiment.

In this embodiment, a conventional video conference terminal device iscompatible.

In still another embodiment, the video conference terminal is mainlyresponsible for implementing the method for presenting a virtualconference site of a video conference. This embodiment is characterizedin that, the control for the virtual conference site is implemented inthe manner of sending M conference control commands directing to Mconference sites of the virtual conference site by the video conferenceterminal directed to the system, and therefore, the conventional mediaprocessing device such as the MCU is compatible. That is, the videoconference terminal receives at least two input conference controlcommands, on the basis of the at least two conference control commandsand according to the determined virtual conference site attribute andthe virtual conference site control mode, acquires one virtualconference site presentation mode in the preset virtual conference sitepresentation modes, and presents a virtual conference site in theacquired virtual conference site presentation mode. The number of the atleast two conference control commands is consistent with the totalnumber of the virtual conference sites in the group to which the virtualconference site requested for presentation belongs, and the specificimplementation may include the following:

A conference terminal having the chair right presets, on an operationinterface of a central control system thereof, information such asvirtual conference site attributes, and virtual conference siteterminals bound to the virtual conference site, and sends theinformation to the operation management station at the conference systemnetwork side through a site call signaling, and the operation managementstation summons a conference that includes a multi-point virtualconference site.

On the operation management station, two modes: a real conference sitecontrol mode and a virtual conference site control mode are defined, andthe two modes may be switched to each other in the conference. The realconference site control mode is the same as the conventional videoconference control mode, but under the virtual conference site controlmode, the conference control operation directing to a certain conferencesite of the virtual conference site initiated by any common terminal isconsidered as the operation for the whole virtual conference site. Atthis time, the mode for the terminal to send to the system M conferencecontrol commands directing to M sub-conference sites of the virtualconference site, other virtual conference site control modes includingbroadcasting a conference site and selecting a conference site, and thevirtual conference site presentation modes including the virtualconference site presentation mode under the common conference site andunder the telepresence conference site, are all the same as those in theforegoing embodiment.

In this embodiment, the conventional MCU device is compatible.

During specific implementation of the foregoing embodiments, when theuser performs the conference control operation directing to amulti-point conference virtual conference site, it may be required tofind the designated virtual conference site in a conference site listfor performing the operation. However, when the number of the virtualconference sites is large, especially in a large-capacity conference,the difficulty in searching the conference site becomes large, whichcauses much inconvenience for the operation of the user. Therefore, theinvention considers that the user may define a grouping templatelocally, and group, through the grouping template, all the virtualconference sites in the conference site list into several groups fordisplay. In addition, the user may also designate the order ofdisplaying the virtual conference sites in each group. In this way, allthe virtual conference sites are displayed according to the mannerdesignated by the user, and even if the number of the virtual conferencesites is large, the user may also find the virtual conference site andperform the conference control operation conveniently. FIG. 12 shows aschematic diagram of the foregoing grouping template.

In one embodiment, when the grouping template is created by using aconference site name as an index, several groups may be defined in onetemplate, and several virtual conference sites may be defined in onegroup. Group names in the same template are different from one another,and the conference site names are also different, thereby ensuring theuniqueness of the conference site.

When the template is defined, the conference site name in the templatekeeps consistent with the name of the remote conference site, namely,the conference site name in the conference site list. In a conferencecontrol list, remote conference site names are used to match theconference site names defined in the template, thereby achieving theobjective of performing grouped display for the conference site list. Atthe same time, when the template is defined, a sorting sequence numbermay be designated for each virtual conference site, and the virtualconference sites in the same group may be sorted through the sequencenumbers.

In one embodiment, in considering that the conference site name may bechanged so that the remote conference site name and the virtualconference site name defined in the local grouping template are notconsistent, a manner of creating a grouping template by taking numbersas indexes is further provided here. The manner defines numbers, insteadof conference site names, in the grouping template.

Several groups may be defined in one template, and several virtualsub-conference sites may be defined in one group. Group names in thesame template are different from one another, and the numbers are alsodifferent, thereby ensuring the uniqueness of the conference site. Then,perform matching for the virtual conference sites through numbers in theconference site list, thereby achieving the objective of groupeddisplay. At the same time, when the template is defined, a sortingsequence number may be designated for each virtual conference site, andthe virtual conference sites in the same group may be sorted through thesequence numbers.

In one embodiment, a manner of grouping according to the mediaprocessing device, such as the MCU to which the conference site belongsis further provided. In a cascaded conference, all virtualsub-conference sites having the same M numbers, that is, the MCUnumbers, are in the same group. For the virtual sub-conference sitesbelonging to the same group, that is, the conference sites having thesame M number, are sorted and displayed according to the conference sitenames or the conference site numbers.

The grouped displaying all the virtual sub-conference sites according tothe conference site name, conference site number or media processingdevice to which the conference site belongs as described in theforegoing embodiments may be implemented by the operation managementstation, the central control system or the media processing device,which is capable of solving the problem of difficulty in searching theconference site when the user performs the conference control operation,thereby improving the charm quality of the products.

Those of ordinary skill in the art may understand that all or a part ofthe steps of the method according to the method embodiments of thepresent invention may be implemented by a program instructing relevanthardware. The program may be stored in a computer readable storagemedium. When the program is run, all or a part of the steps of themethod according to the embodiments of the present invention areperformed. The storage medium may include: a ROM, a RAM, a magneticdisk, and an optical disk.

Embodiments of the present invention further provide a virtualconference site preset apparatus, a media processing device, a videoconference terminal, and a video conference system, as described in thefollowing embodiments. The principles for the devices and system tosolve the problem are similar to those of the method for presenting avirtual conference site of a video conference, and therefore, for theimplementation of the devices and system, reference may be made to theimplementation of the method, and those repeated are not described here.

An embodiment of the present invention provides a virtual conferencesite preset apparatus, and a structure thereof is as shown FIG. 13,which may include:

a first presetting module 1301, configured to preset virtual conferencesite attributes, where the virtual conference site includes at least twoconference terminals;

a second presetting module 1302, configured to, according to the presetvirtual conference site attributes, and under various preset virtualconference site control modes, preset virtual conference sitepresentation modes; and

a sending module 1303, configured to send the preset virtual conferencesite attributes and one virtual conference site presentation moderequested by a video conference terminal for acquisition in the presetvirtual conference site presentation modes.

In an embodiment, the forgoing apparatus may further include:

a grouping module, configured to, according to a conference site name, aconference site number or a media processing device to which aconference site belongs, group all virtual conference sites.

In an embodiment, the forgoing apparatus may further include:

a sorting module, configured to designate a sorting sequence number foreach virtual conference site, and perform sorting for virtual conferencesites in the same group through the sorting sequence numbers.

In an embodiment, the forgoing apparatus may be an operation managementstation, and may also be a central control system.

An embodiment of the present invention further provides a mediaprocessing device, and a structure thereof is as shown in FIG. 14, whichmay include:

a receiving module 1401, configured to acquire virtual conference siteattributes preset by a virtual conference site preset apparatus, wherethe virtual conference site includes at least two conference terminals;

a presetting module 1402, configured to, according to the preset virtualconference site attributes, and under various preset virtual conferencesite control modes, preset virtual conference site presentation modes;and

a sending module 1403, configured to send to a video conference terminalthe preset virtual conference site attributes and one virtual conferencesite presentation mode requested by the video conference terminal foracquisition in the preset virtual conference site presentation modes.

In an embodiment, the forgoing media processing device may furtherinclude:

a controlling module, configured to instruct the video conferenceterminal, according to the determined virtual conference site attributeand the virtual conference site control mode, present all virtualconference sites in a group to which the virtual conference siterequested for presentation belongs in the acquired virtual conferencesite presentation mode.

In an embodiment, the forgoing media processing device may furtherinclude:

a grouping module, configured to, according to a conference site name, aconference site number or a media processing device to which aconference site belongs, group all virtual conference sites.

In an embodiment, the forgoing media processing device may furtherinclude:

a sorting module, configured to designate a sorting sequence number foreach virtual conference site, and perform sorting for virtual conferencesites in the same group through the sorting sequence numbers.

An embodiment of the present invention further provides a videoconference terminal, and a structure thereof is as shown in FIG. 15,which may include:

a first determining module 1501, configured to receive preset virtualconference site attributes, and determine one virtual conference siteattribute therefrom, where the virtual conference site includes at leasttwo conference terminals;

a second determining module 1502, configured to determine a virtualconference site control mode; and

a presenting module 1503, configured to, according to the determinedvirtual conference site attribute and the virtual conference sitecontrol mode, acquire one virtual conference site presentation mode inpreset virtual conference site presentation modes, and present a virtualconference site in the acquired virtual conference site presentationmode.

In an embodiment, the presenting module is specifically configured toacquire one virtual conference site presentation mode in virtualconference site presentation modes preset by a virtual conference sitepreset apparatus or a media processing device.

In an embodiment, the first determining module is specificallyconfigured to receive the virtual conference site attribute and displaya virtual conference site identity; or receive an MT number of eachconference site terminal and display the received MT number.

In an embodiment, the presenting module is specifically configured toreceive at least two input conference control commands, and on the basisof the at least two conference control commands and according to thedetermined virtual conference site attribute and the virtual conferencesite control mode, present a virtual conference site in the presetvirtual conference site presentation mode. The number of the multiplegroups of conference control commands is consistent with the totalnumber of the virtual conference sites in the group to which the virtualconference site requested for presentation belongs.

The presenting module performs the presentation of the virtualconference site, including that each conference site terminal accepts acode stream configured by the media processing device.

An embodiment of the present invention further provides a videoconference system, and a structure thereof is as shown in FIG. 16, whichmay include:

a virtual conference site preset apparatus 1601, configured to: presetvirtual conference site attributes, where the virtual conference siteincludes at least two conference terminals; according to the presetvirtual conference site attributes, under various preset virtualconference site control modes, preset virtual conference sitepresentation modes; send the preset virtual conference site attributes;receive a request of a video conference terminal acquiring one virtualconference site presentation mode in the preset virtual conference sitepresentation modes forwarded by a media processing device, and send onevirtual conference site presentation mode in the preset virtualconference site presentation modes requested by the video conferenceterminal; the apparatus may be an operation management station, and mayalso be a central control system;

the media processing device 1602, configured to: receive and forward tothe video conference terminal a the preset virtual conference siteattributes sent by the virtual conference site preset apparatus; receivethe request of acquiring one virtual conference site presentation modein the preset virtual conference site presentation modes sent by thevideo conference terminal and forward it to the virtual conference sitepreset apparatus; and forward the virtual conference site presentationmode sent by the virtual conference site preset apparatus; and

the video conference terminal 1603, configured to: receive the presetvirtual conference site attributes and determine one virtual conferencesite attribute therefrom; determine a virtual conference site controlmode; according to the determined virtual conference site attribute andthe virtual conference site control mode, send the request of acquiringone virtual conference site presentation mode in the preset virtualconference site presentation modes; receive the virtual conference sitepresentation mode forwarded by the media processing device, and presenta virtual conference site in the received virtual conference sitepresentation mode.

An embodiment of the present invention further provides a videoconference system, and a structure thereof is as shown in FIG. 17, whichmay include:

a virtual conference site preset apparatus 1701, configured to presetvirtual conference site attributes, where the virtual conference siteincludes at least two conference terminals; and send the preset virtualconference site attributes;

a media processing device 1702, configured to: receive the presetvirtual conference site attributes and forward them to a videoconference terminal; according to the preset virtual conference siteattributes, and under various preset virtual conference site controlmodes, preset virtual conference site presentation modes; receive arequest of the video conference terminal acquiring one virtualconference site presentation mode in the preset virtual conference sitepresentation modes, and send one virtual conference site presentationmode in the preset virtual conference site presentation modes requestedby the video conference terminal; and

the video conference terminal 1703, configured to: receive the presetvirtual conference site attributes and determine one virtual conferencesite attribute therefrom; determine a virtual conference site controlmode; according to the determined virtual conference site attribute andthe virtual conference site control mode, send the request of acquiringone virtual conference site presentation mode in the preset virtualconference site presentation modes; receive the virtual conference sitepresentation mode sent by the media processing device, and present avirtual conference site in the received virtual conference sitepresentation mode.

In the embodiments of the present invention, for the virtual conferencesite including at least two conference terminals, receive preset virtualconference site attributes and determine one virtual conference siteattribute therefrom, the virtual conference site includes at least twoconference terminals; determine a virtual conference site control mode;according to the determined virtual conference site attribute and thevirtual conference site control mode, acquire one virtual conferencesite presentation mode in the preset virtual conference sitepresentation modes, and present a virtual conference site in theacquired virtual conference site presentation mode; thereby using thevirtual conference site attribute to provide a conference control modein which pictures of the virtual conference site are switchedintegrally. The operation is simple and convenient, so that the virtualconference site may be well presented, thereby providing a goodexperience for participators of the video conference.

The objectives, technical solutions, and beneficial effects of thepresent invention have been described in further detail through theabove specific embodiments. It should be understood that the abovedescriptions are merely specific embodiments of the present invention,but not intended to limit the present invention. Any modification,equivalent replacement, or improvement made without departing from thespirit and principle of the present invention should fall within theprotection scope of the present invention.

What is claimed is:
 1. A method for presenting a virtual conference siteof a video conference, wherein the method comprises: receiving presetvirtual conference site attributes, and determining one virtualconference site attribute therefrom, wherein the virtual conference siteattribute comprises an identity of a virtual conference site and anidentity of a bound terminal in the virtual conference site, and thevirtual conference site comprises at least two conference terminals;determining a virtual conference site control mode; and according to thedetermined virtual conference site attribute and the virtual conferencesite control mode, acquiring one virtual conference site presentationmode in preset virtual conference site presentation modes, andpresenting a virtual conference site in the acquired virtual conferencesite presentation mode.
 2. The method according to claim 1, wherein theacquiring one virtual conference site presentation mode in the presetvirtual conference site presentation modes comprises: acquiring onevirtual conference site presentation mode in virtual conference sitepresentation modes preset by a virtual conference site preset apparatusor a media processing device preset.
 3. A presentation method for avirtual conference site of a video conference, wherein the methodcomprises: acquiring virtual conference site attributes preset by avirtual conference site preset apparatus, and the virtual conferencesite comprises at least two conference terminals; according to thepreset virtual conference site attributes, and under various presetvirtual conference site control modes, presetting virtual conferencesite presentation modes; and sending to a video conference terminal thepreset virtual conference site attributes and one virtual conferencesite presentation mode requested by the video conference terminal foracquisition in the preset virtual conference site presentation modes. 4.The method according to claim 3, wherein the virtual conference sitepresentation mode comprises: in a telepresence conference site, at leastone screen displaying a fixed virtual conference site, other screensdisplaying other virtual conference sites by adopting a polling mode; ina common conference site, displaying virtual conference sitessequentially one by one in a polling mode; or, in a telepresenceconference site, by using the total number of screens as a unit,displaying virtual conference sites of the total number each time, untilall the virtual conference sites are displayed; in a common conferencesite, displaying virtual conference sites sequentially one by onethrough a polling mode; or, split jointing all virtual conference sitesinto a whole image, full-screen displaying the image on all screens of atelepresence conference site through image compression or stretching; ina common conference site, displaying virtual conference sitessequentially one by one through a polling mode; or, in a telepresenceconference site, at least one screen displaying a fixed virtualconference site, other screens display other virtual conference sites byadopting a multi-picture polling mode; in a common conference site,displaying a virtual conference site of each screen in the telepresenceconference site sequentially in a multi-picture polling mode; or, in atelepresence conference site, at least one screen displays a fixedvirtual conference site, other screens display other virtual conferencesites by adopting a multi-picture mode; in a common conference site,displaying a virtual conference site of each screen in the telepresenceconference site sequentially in a multi-picture mode; or, in atelepresence conference site, by using the total number of screens as aunit, displaying multiple virtual conference sites averagely; in acommon conference site, displaying a virtual conference site of eachscreen in the telepresence conference site sequentially in amulti-picture mode; or, in a common conference site, displaying allvirtual conference sites in a multi-picture polling mode; in atelepresence conference site, one screen displaying a virtual conferencesite the same as the common conference site, and other screensdisplaying the virtual conference site randomly; or, in a commonconference site, displaying all virtual conference sites in amulti-picture mode; in a telepresence conference site, one screendisplaying a virtual conference site the same as the common conferencesite, and other screens displaying the virtual conference site randomly.5. The method according to claim 3, further comprising: instructing thevideo conference terminal to, according to the determined virtualconference site attribute and the virtual conference site control mode,present all virtual conference sites in a group to which the virtualconference site requested for presentation belongs in the acquiredvirtual conference site presentation mode.
 6. The method according toclaim 3, further comprising: according to a conference site name, aconference site number or a media processing device to which theconference site belongs, grouping all virtual conference sites.
 7. Themethod according to claim 6, further comprising: designating a sortingsequence number for each virtual conference site, and performing sortingfor the virtual conference sites in the same group through the sortingsequence numbers.
 8. A virtual conference site preset apparatus,comprising: a first presetting module, configured to preset virtualconference site attributes, and the virtual conference site comprises atleast two conference terminals; a second presetting module, configuredto, according to the preset virtual conference site attributes, andunder various preset virtual conference site control modes, presetvirtual conference site presentation modes; and a sending module,configured to send the preset virtual conference site attributes and onevirtual conference site presentation mode requested by a videoconference terminal for acquisition in the preset virtual conferencesite presentation modes.
 9. The apparatus according to claim 8, furthercomprising: a grouping module, configured to, according to a conferencesite name, a conference site number or a media processing device towhich a conference site belongs, group all virtual conference sites. 10.The apparatus according to claim 9, further comprising: a sortingmodule, configured to designate a sorting sequence number for eachvirtual conference site, and perform sorting for virtual conferencesites in the same group through the sorting sequence numbers.
 11. Amedia processing device, comprising: an acquiring module, configured toacquire virtual conference site attributes preset by a virtualconference site preset apparatus, and the virtual conference sitecomprises at least two conference terminals; a presetting module,configured to, according to the preset virtual conference siteattributes, and under various preset virtual conference site controlmodes, preset virtual conference site presentation modes; and a sendingmodule, configured to send to a video conference terminal the presetvirtual conference site attributes and one virtual conference sitepresentation mode requested by the video conference terminal foracquisition in the preset virtual conference site presentation modes.12. The media processing device according to claim 11, furthercomprising: a controlling module, configured to instruct the videoconference terminal, according to the determined virtual conference siteattribute and the virtual conference site control mode, present allvirtual conference sites in a group to which the virtual conference siterequested for presentation belongs in the acquired virtual conferencesite presentation mode.
 13. The media processing device according toclaim 11, further comprising: a grouping module, configured to,according to a conference site name, a conference site number or a mediaprocessing device to which a conference site belongs, group all virtualconference sites.
 14. The media processing device according to claim 13,further comprising: a sorting module, configured to designate a sortingsequence number for each virtual conference site, and perform sortingfor virtual conference sites in the same group through the sortingsequence numbers.
 15. A video conference terminal, comprising: a firstdetermining module, configured to receive preset virtual conference siteattributes, and determine one virtual conference site attributetherefrom, and the virtual conference site comprises at least twoconference terminals; a second determining module, configured todetermine a virtual conference site control mode; and a presentingmodule, configured to, according to the determined virtual conferencesite attribute and the virtual conference site control mode, acquire onevirtual conference site presentation mode in preset virtual conferencesite presentation modes, and present a virtual conference site in theacquired virtual conference site presentation mode.
 16. The videoconference terminal according to claim 15, wherein the presenting moduleis further configured to acquire one virtual conference sitepresentation mode in virtual conference site presentation modes presetby a virtual conference site preset apparatus or a media processingdevice.
 17. A video conference system, comprising: a virtual conferencesite preset apparatus, configured to: preset virtual conference siteattributes, and the virtual conference site comprises at least twoconference terminals; according to the preset virtual conference siteattributes, under various preset virtual conference site control modes,preset virtual conference site presentation modes; send the presetvirtual conference site attributes; receive a request of a videoconference terminal acquiring one virtual conference site presentationmode in the preset virtual conference site presentation modes forwardedby a media processing device, and send one virtual conference sitepresentation mode in the preset virtual conference site presentationmodes requested by the video conference terminal; the media processingdevice, configured to: receive and forward to the video conferenceterminal the preset virtual conference site attributes sent by thevirtual conference site preset apparatus; receive the request ofacquiring one virtual conference site presentation mode in the presetvirtual conference site presentation modes sent by the video conferenceterminal and forward it to the virtual conference site preset apparatus;and forward the virtual conference site presentation mode sent by thevirtual conference site preset apparatus; and the video conferenceterminal, configured to: receive the preset virtual conference siteattributes and determine one virtual conference site attributetherefrom; determine a virtual conference site control mode; accordingto the determined virtual conference site attribute and the virtualconference site control mode, send the request of acquiring one virtualconference site presentation mode in the preset virtual conference sitepresentation modes; receive the virtual conference site presentationmode forwarded by the media processing device, and present a virtualconference site in the received virtual conference site presentationmode.
 18. A video conference system, comprising: a virtual conferencesite preset apparatus, configured to preset virtual conference siteattributes, and the virtual conference site comprises at least twoconference terminals; and send the preset virtual conference siteattributes; a media processing device, configured to: receive the presetvirtual conference site attributes and forward them to a videoconference terminal; according to the preset virtual conference siteattributes, under various preset virtual conference site control modes,preset virtual conference site presentation modes; receive a request ofthe video conference terminal acquiring one virtual conference sitepresentation mode in the preset virtual conference site presentationmodes, and send one virtual conference site presentation mode in thepreset virtual conference site presentation modes requested by the videoconference terminal; and the video conference terminal, configured to:receive the preset virtual conference site attributes and determine onevirtual conference site attribute therefrom; determine a virtualconference site control mode; according to the determined virtualconference site attribute and the virtual conference site control mode,send the request of acquiring one virtual conference site presentationmode in the preset virtual conference site presentation modes; receivethe virtual conference site presentation mode sent by the mediaprocessing device, and present a virtual conference site in the receivedvirtual conference site presentation mode.